Results 21 to 30 of about 4,029,048 (318)

AVD proper edge-coloring of some families of graphs

open access: yesInternational Journal of Mathematics for Industry, 2021
Adjacent vertex-distinguishing proper edge-coloring is the minimum number of colors required for the proper edge-coloring of [Formula: see text] in which no two adjacent vertices are incident to edges colored with the same set of colors.
J. Naveen
doaj   +1 more source

Sufficient Conditions of 6-Cycles Make Planar Graphs DP-4-Colorable

open access: yesMathematics, 2022
In simple graphs, DP-coloring is a generalization of list coloring and thus many results of DP-coloring generalize those of list coloring. Xu and Wu proved that every planar graph without 5-cycles adjacent simultaneously to 3-cycles and 4-cycles is 4 ...
Kittikorn Nakprasit   +2 more
doaj   +1 more source

The Business Cycle and the Life Cycle [PDF]

open access: yesNBER Macroeconomics Annual, 2004
Our paper documents the differences in the variability of hours worked over the business cycle across several demographic groups and shows that these differences are large. We argue that understanding these differences should be useful in understanding the forces that account for aggregate fluctuations in hours worked.
Paul Gomme   +3 more
openaire   +1 more source

OPERATING ELEMENTS DAMAGE OF TOOLS CONNECTED WITH THE PLASTIC DEFORMATION OF HARDENED ORGANIC COMPOUNDS

open access: yesNauka ta progres transportu, 2014
Purpose. Most of the freight traffic in Ukraine is made by railway transport. Government statistics of annual railway freight traffic (January-November) records the following data: 2011 - 468 million tons (108.2% to 2010); 2012 – 421.5 million tons (98.
А. R. Мilianych
doaj   +1 more source

The Cell Cycle is a Limit Cycle [PDF]

open access: yesMathematical Modelling of Natural Phenomena, 2012
Progression along the successive phases of the mammalian cell cycle is driven by a network of cyclin-dependent kinases (Cdks). This network is regulated by a variety of negative and positive feedback loops. We previously proposed a detailed, 39-variable model for the Cdk network and showed that it is capable of temporal self-organization in the form of
Gérard, Claude, Goldbeter, Albert
openaire   +2 more sources

The Relationship Between Nutritional Status and Menarche Cycle in Students

open access: yes, 2023
Menstruation is periodic bleeding from the uterus that begins about 14 days after ovulation periodically due to the shedding of the lining of the uterus.
Putri, Devia Lydia; Program Studi D3 Kebidanan, Institut Kesehatan dan Bisnis Annisa, Bogor   +3 more
core   +1 more source

Dynamics of the Simplest Piecewise Linear Discontinuous Mappings

open access: yesМоделирование и анализ информационных систем, 2015
The dynamics of one-dimensional piecewise linear mapping with one rupture is investigated. In the space of parameters we defined regions with different dynamical effects.
D. S. Kaschenko
doaj   +1 more source

Odd Harmonious Labeling of PnC4 and  PnD2(C4)

open access: yesIndonesian Journal of Combinatorics, 2021
A graph G with q edges is said to be odd harmonious if there exists an injection f:V(G) → ℤ2q so that the induced function f*:E(G)→ {1,3,...,2q-1} defined by f*(uv)=f(u)+f(v) is a bijection.Here we show that graphs constructed by edge comb product of ...
Sabrina Shena Sarasvati   +2 more
doaj   +1 more source

The Seasonal Cycle and the Business Cycle [PDF]

open access: yesJournal of Political Economy, 1989
Almost all recent research on macroeconomic fluctuations has worked with seasonally-adjusted or annual data. This paper takes a different approach by examining the seasonal movements themselves. The authors' results show that seasonal fluctuations are an important source of variation in all macroeconomic quantity variables, but are small or absent in ...
Robert B. Barsky, Jeffrey A. Miron
openaire   +2 more sources

Unknotted Cycles

open access: yesThe Electronic Journal of Combinatorics, 2022
Noting that cycle diagrams of permutations visually resemble grid diagrams used to depict knots and links in topology, we consider the knot (or link) obtained from the cycle diagram of a permutation. We show that the permutations which correspond in this way to an unknot are enumerated by the Schröder numbers, and also enumerate the permutations ...
Christopher Cornwell, Nathan McNew
openaire   +3 more sources

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